Pioneers of the Regular Mapping Paradigm

* Nicola Vicentino (1511–1576): adaptive JI, 31-ET
* Leonhard Euler (1707-1783): tonespace (5-limit)
* Hermann von Helmholtz (1821-1894): psychoacoustics
* RHM Bosanquet (1841–1913): regular mapping, generalized keyboard
* Shohe Tanaka (1862-1945): 5-limit tonespace (triangular projection)
* Adriaan Fokker (1887-1972): periodicity blocks
* Harry Partch (1901-1974): extended JI
* Erv Wilson (1928-2016): extended tonespace (& projections), scale tree